A survey about social media reported that 81% of BZB marketers {marketers that focus primarily on attracting businesses) plan to increase their use of social media. as compared to 54% of B20 marketers (marketers that primarily target consumers). The survey was based on 1,330 BZB marketers and 1,710 B20 marketers. The accompanying table summarizes the results. Complete parts (a) through (d) below. 1 Click the icon to view the contingency table about social media use and marketers. a. What is the probability that a randomly selected respondent plans to increase use of social media? {Round to three decimal places as needed.) I). What is the probability that a randomly selected respondent is a B20 marketer? {Round to three decimal places as needed.) c. What is the probability that a randomly selected respondent plans to increase use of social media or is a B20 marketer? {Round to three decimal places as needed.) d. Explain the difference in the results in (b) and {c). O A. The two events in part (c) are mutually exclusive, but part (b) has only one event. 0 B. The probability in part (b) is a marginal probability, while in part {c), the probability of an event or second event is calculated. 0 0. The two events in part (c) are collectively exhaustive. while the event in part (b) is not. 0 D. The probability in part (b) is a joint probability, while the event in part (c) is a simple probability. 1 : Contingency Table Increase Use of Business Focus g Social Media? 323 B 2c Total Yes 1.071 917 1.988 No 259 793 1 .052 Total 1.330 1,710 3.040